package com.zyt.springboot.testAndTest;

import java.util.ArrayList;
import java.util.Collections;

/*
 * 腾哥专用代码防伪标志！！！
 * @params:
 */
public class demo1 {
    public static void main(String[] args) {
        ArrayList<String> strings = new ArrayList<>(Collections.singletonList("123"));
        System.out.println(strings);
        strings.add("123");
        System.out.println(strings);
        strings.remove("123");
        System.out.println(strings);
    }
}
